Award winning two-bolt design: Stock valve covers have four bolts holding the cover on to the engine. PML's two-bolt design removes the two center bolts for an attractive presentation. Because PML valve covers have thick wall sand cast aluminum construction, they are much stiffer than stock and need only two bolts to apply pressure evenly to the gasket. PML valve covers will not tweak, bend, twist or deform. No leaks and a great look to dress up your engine.

If PCV, oil fill, or breather holes are needed, they can be machined on the intake manifold side in the front or back (scroll down for more info).

Many crate engines, 1987-1998 Silverado, Sierra, Suburban, Tahoe, Corvette, Impala SS, Camaro Z28, and mid-90s Pontiac Camaro and Firebird have small block center bolt heads. This fin-only design allows these valve covers to be used in non-GM applications such as Ford hot rods.

About Fitment

These covers are slightly taller than stock to allow roller rockers. Please check for interference from a taller valve cover as some engines have a bracket or other parts that sit close to the stock covers. Click here for dimensions.

Baffles

Optional PCV, Breather and Oil Fill Holes

PML small block valve covers are made without holes for PCV, oil fill or breather. PML can machine holes to your specifications.

For engines that require PCV and breather holes on the valve cover, PML designed the casting to be thicker on the intake manifold side and put baffles on the inside in two locations. This area can be machined with a hole. This way, the top of the valve cover is left alone for a clean, classic appearance.

A separate breather hole is not needed since the PCV or push-in breather can be removed and oil added there.

When ordering holes, you will need to specify the hole location. Holes can be machined on the passenger's side cover or on the driver's side cover, towards the front of the car or towards the rear. You can choose the location and type of hole needed in the shopping cart or can call to order. International customers, please email us for ordering.

The information is generally the same although a different PML valve cover is shown in these videos.

You can call to order or use the options in the shopping card to specify your requirements for PCV, oil fill or breather.

Gaskets

PML recommends using Fel-Pro gaskets with these valve covers. The part number is VS 50088 R.

To install the covers using these gaskets, hold the gasket in place with your fingers and put your thumbs over the screws on the top. Then carefully fit the valve covers on the head making sure to get the groove on the covers lined up with the groove on the head. Put the exhaust side in first. Not getting the grooves lined up is a cause of leaks.

PML Small Block Valve Covers with T&D Rocker Arms

PML designed small block Chevy valve covers to work with many roller rocker systems. However, our valve covers are not compatible with T&D Shaft Mounted Rocker Arms.

The T&D Machine Products Competition Rocker Arms are shown in the image at left. The shaft mounts are very tall, almost to the top of the rocker arms. The PML cast-in internal baffles will contact these mounts.